/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.logging.event;

import java.time.Clock;
import java.time.Duration;
import java.time.Instant;

class TimeBasedLimitedEventFilter implements EventsFilter {
    private final Clock clock;
    private final Duration maxPublishPeriod;

    TimeBasedLimitedEventFilter(Clock clock, Duration maxPublishPeriod) {
        this.clock = clock;
        this.maxPublishPeriod = maxPublishPeriod;
    }

    private Instant lastMiscEvent = Instant.MIN;

    @Override
    public boolean canPublish() {
        var now = Instant.now(clock);
        var canPublish = now.isAfter(lastMiscEvent.plus(maxPublishPeriod));
        if (canPublish) {
            lastMiscEvent = now;
        }
        return canPublish;
    }
}
